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Fix crash when intersecting with NULL region.
[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XCopyPlane XCOPYPLANE
15 #endif
16
17 #include "wx/dcclient.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/window.h"
21 #include "wx/log.h"
22 #include "wx/dcmemory.h"
23 #include "wx/math.h" // for floating-point functions
24 #include "wx/image.h"
25 #include "wx/module.h"
26 #endif
27
28 #include "wx/fontutil.h"
29 #include "wx/scrolwin.h"
30
31 #include "wx/gtk/win_gtk.h"
32 #include "wx/gtk/private.h"
33
34 #include <gdk/gdkx.h>
35
36 //-----------------------------------------------------------------------------
37 // local defines
38 //-----------------------------------------------------------------------------
39
40 #define USE_PAINT_REGION 1
41
42 //-----------------------------------------------------------------------------
43 // local data
44 //-----------------------------------------------------------------------------
45
46 #include "bdiag.xbm"
47 #include "fdiag.xbm"
48 #include "cdiag.xbm"
49 #include "horiz.xbm"
50 #include "verti.xbm"
51 #include "cross.xbm"
52 #define num_hatches 6
53
54 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
55 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
56
57
58 static GdkPixmap *hatches[num_hatches];
59 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
60
61 extern GtkWidget *wxGetRootWindow();
62
63 //-----------------------------------------------------------------------------
64 // constants
65 //-----------------------------------------------------------------------------
66
67 const double RAD2DEG = 180.0 / M_PI;
68
69 // ----------------------------------------------------------------------------
70 // private functions
71 // ----------------------------------------------------------------------------
72
73 static inline double dmax(double a, double b) { return a > b ? a : b; }
74 static inline double dmin(double a, double b) { return a < b ? a : b; }
75
76 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
77
78 //-----------------------------------------------------------------------------
79 // temporary implementation of the missing GDK function
80 //-----------------------------------------------------------------------------
81
82 #include "gdk/gdkprivate.h"
83
84 static
85 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94 {
95 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
96 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
98
99 gint src_width, src_height;
100 gdk_drawable_get_size(src, &src_width, &src_height);
101 if (width == -1) width = src_width;
102 if (height == -1) height = src_height;
103
104 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
105 GDK_WINDOW_XID(src),
106 GDK_WINDOW_XID(drawable),
107 GDK_GC_XGC(gc),
108 xsrc, ysrc,
109 width, height,
110 0, 0,
111 1 );
112 }
113
114 //-----------------------------------------------------------------------------
115 // Implement Pool of Graphic contexts. Creating them takes too much time.
116 //-----------------------------------------------------------------------------
117
118 enum wxPoolGCType
119 {
120 wxGC_ERROR = 0,
121 wxTEXT_MONO,
122 wxBG_MONO,
123 wxPEN_MONO,
124 wxBRUSH_MONO,
125 wxTEXT_COLOUR,
126 wxBG_COLOUR,
127 wxPEN_COLOUR,
128 wxBRUSH_COLOUR,
129 wxTEXT_SCREEN,
130 wxBG_SCREEN,
131 wxPEN_SCREEN,
132 wxBRUSH_SCREEN
133 };
134
135 struct wxGC
136 {
137 GdkGC *m_gc;
138 wxPoolGCType m_type;
139 bool m_used;
140 };
141
142 #define GC_POOL_ALLOC_SIZE 100
143
144 static int wxGCPoolSize = 0;
145
146 static wxGC *wxGCPool = NULL;
147
148 static void wxInitGCPool()
149 {
150 // This really could wait until the first call to
151 // wxGetPoolGC, but we will make the first allocation
152 // now when other initialization is being performed.
153
154 // Set initial pool size.
155 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
156
157 // Allocate initial pool.
158 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
159 if (wxGCPool == NULL)
160 {
161 // If we cannot malloc, then fail with error
162 // when debug is enabled. If debug is not enabled,
163 // the problem will eventually get caught
164 // in wxGetPoolGC.
165 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
166 return;
167 }
168
169 // Zero initial pool.
170 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
171 }
172
173 static void wxCleanUpGCPool()
174 {
175 for (int i = 0; i < wxGCPoolSize; i++)
176 {
177 if (wxGCPool[i].m_gc)
178 g_object_unref (wxGCPool[i].m_gc);
179 }
180
181 free(wxGCPool);
182 wxGCPool = NULL;
183 wxGCPoolSize = 0;
184 }
185
186 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
187 {
188 wxGC *pptr;
189
190 // Look for an available GC.
191 for (int i = 0; i < wxGCPoolSize; i++)
192 {
193 if (!wxGCPool[i].m_gc)
194 {
195 wxGCPool[i].m_gc = gdk_gc_new( window );
196 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
197 wxGCPool[i].m_type = type;
198 wxGCPool[i].m_used = false;
199 }
200 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
201 {
202 wxGCPool[i].m_used = true;
203 return wxGCPool[i].m_gc;
204 }
205 }
206
207 // We did not find an available GC.
208 // We need to grow the GC pool.
209 pptr = (wxGC *)realloc(wxGCPool,
210 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
211 if (pptr != NULL)
212 {
213 // Initialize newly allocated pool.
214 wxGCPool = pptr;
215 memset(&wxGCPool[wxGCPoolSize], 0,
216 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
217
218 // Initialize entry we will return.
219 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
220 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
221 wxGCPool[wxGCPoolSize].m_type = type;
222 wxGCPool[wxGCPoolSize].m_used = true;
223
224 // Set new value of pool size.
225 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
226
227 // Return newly allocated entry.
228 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
229 }
230
231 // The realloc failed. Fall through to error.
232 wxFAIL_MSG( wxT("No GC available") );
233
234 return (GdkGC*) NULL;
235 }
236
237 static void wxFreePoolGC( GdkGC *gc )
238 {
239 for (int i = 0; i < wxGCPoolSize; i++)
240 {
241 if (wxGCPool[i].m_gc == gc)
242 {
243 wxGCPool[i].m_used = false;
244 return;
245 }
246 }
247
248 wxFAIL_MSG( wxT("Wrong GC") );
249 }
250
251 //-----------------------------------------------------------------------------
252 // wxWindowDC
253 //-----------------------------------------------------------------------------
254
255 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
256
257 wxWindowDC::wxWindowDC()
258 {
259 m_penGC = (GdkGC *) NULL;
260 m_brushGC = (GdkGC *) NULL;
261 m_textGC = (GdkGC *) NULL;
262 m_bgGC = (GdkGC *) NULL;
263 m_cmap = (GdkColormap *) NULL;
264 m_isMemDC = false;
265 m_isScreenDC = false;
266 m_owner = (wxWindow *)NULL;
267 m_context = (PangoContext *)NULL;
268 m_layout = (PangoLayout *)NULL;
269 m_fontdesc = (PangoFontDescription *)NULL;
270 }
271
272 wxWindowDC::wxWindowDC( wxWindow *window )
273 {
274 wxASSERT_MSG( window, wxT("DC needs a window") );
275
276 m_penGC = (GdkGC *) NULL;
277 m_brushGC = (GdkGC *) NULL;
278 m_textGC = (GdkGC *) NULL;
279 m_bgGC = (GdkGC *) NULL;
280 m_cmap = (GdkColormap *) NULL;
281 m_owner = (wxWindow *)NULL;
282 m_isMemDC = false;
283 m_isScreenDC = false;
284 m_font = window->GetFont();
285
286 GtkWidget *widget = window->m_wxwindow;
287
288 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
289 // code should still be able to create wxClientDCs for them, so we will
290 // use the parent window here then.
291 if ( !widget )
292 {
293 window = window->GetParent();
294 widget = window->m_wxwindow;
295 }
296
297 wxASSERT_MSG( widget, wxT("DC needs a widget") );
298
299 m_context = window->GtkGetPangoDefaultContext();
300 m_layout = pango_layout_new( m_context );
301 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
302
303 GtkPizza *pizza = GTK_PIZZA( widget );
304 m_window = pizza->bin_window;
305
306 // Window not realized ?
307 if (!m_window)
308 {
309 // Don't report problems as per MSW.
310 m_ok = true;
311
312 return;
313 }
314
315 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
316
317 SetUpDC();
318
319 /* this must be done after SetUpDC, bacause SetUpDC calls the
320 repective SetBrush, SetPen, SetBackground etc functions
321 to set up the DC. SetBackground call m_owner->SetBackground
322 and this might not be desired as the standard dc background
323 is white whereas a window might assume gray to be the
324 standard (as e.g. wxStatusBar) */
325
326 m_owner = window;
327
328 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
329 {
330 // reverse sense
331 m_signX = -1;
332
333 // origin in the upper right corner
334 m_deviceOriginX = m_owner->GetClientSize().x;
335 }
336 }
337
338 wxWindowDC::~wxWindowDC()
339 {
340 Destroy();
341
342 if (m_layout)
343 g_object_unref (m_layout);
344 if (m_fontdesc)
345 pango_font_description_free( m_fontdesc );
346 }
347
348 void wxWindowDC::SetUpDC()
349 {
350 m_ok = true;
351
352 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
353
354 if (m_isScreenDC)
355 {
356 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
357 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
358 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
359 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
360 }
361 else
362 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
363 {
364 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
365 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
366 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
367 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
368 }
369 else
370 {
371 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
372 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
373 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
374 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
375 }
376
377 /* background colour */
378 m_backgroundBrush = *wxWHITE_BRUSH;
379 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
380 #ifdef __WXGTK24__
381 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
382 #else
383 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
384 #endif
385
386 /* m_textGC */
387 m_textForegroundColour.CalcPixel( m_cmap );
388 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
389
390 m_textBackgroundColour.CalcPixel( m_cmap );
391 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
392
393 gdk_gc_set_fill( m_textGC, GDK_SOLID );
394
395 /* m_penGC */
396 m_pen.GetColour().CalcPixel( m_cmap );
397 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
398 gdk_gc_set_background( m_penGC, bg_col );
399
400 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
401
402 /* m_brushGC */
403 m_brush.GetColour().CalcPixel( m_cmap );
404 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
405 gdk_gc_set_background( m_brushGC, bg_col );
406
407 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
408
409 /* m_bgGC */
410 gdk_gc_set_background( m_bgGC, bg_col );
411 gdk_gc_set_foreground( m_bgGC, bg_col );
412
413 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
414
415 /* ROPs */
416 gdk_gc_set_function( m_textGC, GDK_COPY );
417 gdk_gc_set_function( m_brushGC, GDK_COPY );
418 gdk_gc_set_function( m_penGC, GDK_COPY );
419
420 /* clipping */
421 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
422 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
423 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
424 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
425
426 if (!hatch_bitmap)
427 {
428 hatch_bitmap = hatches;
429 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
430 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
431 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
432 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
433 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
434 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
435 }
436 }
437
438 void wxWindowDC::DoGetSize( int* width, int* height ) const
439 {
440 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
441
442 m_owner->GetSize(width, height);
443 }
444
445 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
446 const wxColour & col, int style);
447
448 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
449 const wxColour& col, int style)
450 {
451 return wxDoFloodFill(this, x, y, col, style);
452 }
453
454 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
455 {
456 // Generic (and therefore rather inefficient) method.
457 // Could be improved.
458 wxMemoryDC memdc;
459 wxBitmap bitmap(1, 1);
460 memdc.SelectObject(bitmap);
461 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
462 memdc.SelectObject(wxNullBitmap);
463
464 wxImage image = bitmap.ConvertToImage();
465 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
466 return true;
467 }
468
469 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
470 {
471 wxCHECK_RET( Ok(), wxT("invalid window dc") );
472
473 if (m_pen.GetStyle() != wxTRANSPARENT)
474 {
475 if (m_window)
476 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
477
478 CalcBoundingBox(x1, y1);
479 CalcBoundingBox(x2, y2);
480 }
481 }
482
483 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
484 {
485 wxCHECK_RET( Ok(), wxT("invalid window dc") );
486
487 if (m_pen.GetStyle() != wxTRANSPARENT)
488 {
489 int w = 0;
490 int h = 0;
491 GetSize( &w, &h );
492 wxCoord xx = XLOG2DEV(x);
493 wxCoord yy = YLOG2DEV(y);
494 if (m_window)
495 {
496 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
497 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
498 }
499 }
500 }
501
502 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
503 wxCoord xc, wxCoord yc )
504 {
505 wxCHECK_RET( Ok(), wxT("invalid window dc") );
506
507 wxCoord xx1 = XLOG2DEV(x1);
508 wxCoord yy1 = YLOG2DEV(y1);
509 wxCoord xx2 = XLOG2DEV(x2);
510 wxCoord yy2 = YLOG2DEV(y2);
511 wxCoord xxc = XLOG2DEV(xc);
512 wxCoord yyc = YLOG2DEV(yc);
513 double dx = xx1 - xxc;
514 double dy = yy1 - yyc;
515 double radius = sqrt((double)(dx*dx+dy*dy));
516 wxCoord r = (wxCoord)radius;
517 double radius1, radius2;
518
519 if (xx1 == xx2 && yy1 == yy2)
520 {
521 radius1 = 0.0;
522 radius2 = 360.0;
523 }
524 else if ( wxIsNullDouble(radius) )
525 {
526 radius1 =
527 radius2 = 0.0;
528 }
529 else
530 {
531 radius1 = (xx1 - xxc == 0) ?
532 (yy1 - yyc < 0) ? 90.0 : -90.0 :
533 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
534 radius2 = (xx2 - xxc == 0) ?
535 (yy2 - yyc < 0) ? 90.0 : -90.0 :
536 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
537 }
538 wxCoord alpha1 = wxCoord(radius1 * 64.0);
539 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
540 while (alpha2 <= 0) alpha2 += 360*64;
541 while (alpha1 > 360*64) alpha1 -= 360*64;
542
543 if (m_window)
544 {
545 if (m_brush.GetStyle() != wxTRANSPARENT)
546 {
547 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
548 {
549 gdk_gc_set_ts_origin( m_textGC,
550 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
551 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
552 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
553 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
554 } else
555 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
556 {
557 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
558 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
559 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
560 } else
561 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
562 {
563 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
564 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
565 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
566 } else
567 if (m_brush.GetStyle() == wxSTIPPLE)
568 {
569 gdk_gc_set_ts_origin( m_brushGC,
570 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
571 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
572 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
573 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
574 }
575 else
576 {
577 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
578 }
579 }
580
581 if (m_pen.GetStyle() != wxTRANSPARENT)
582 {
583 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
584
585 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
586 {
587 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
588 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
589 }
590 }
591 }
592
593 CalcBoundingBox (x1, y1);
594 CalcBoundingBox (x2, y2);
595 }
596
597 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
598 {
599 wxCHECK_RET( Ok(), wxT("invalid window dc") );
600
601 wxCoord xx = XLOG2DEV(x);
602 wxCoord yy = YLOG2DEV(y);
603 wxCoord ww = m_signX * XLOG2DEVREL(width);
604 wxCoord hh = m_signY * YLOG2DEVREL(height);
605
606 // CMB: handle -ve width and/or height
607 if (ww < 0) { ww = -ww; xx = xx - ww; }
608 if (hh < 0) { hh = -hh; yy = yy - hh; }
609
610 if (m_window)
611 {
612 wxCoord start = wxCoord(sa * 64.0);
613 wxCoord end = wxCoord((ea-sa) * 64.0);
614
615 if (m_brush.GetStyle() != wxTRANSPARENT)
616 {
617 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
618 {
619 gdk_gc_set_ts_origin( m_textGC,
620 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
621 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
622 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
623 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
624 } else
625 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
626 {
627 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
628 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
629 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
630 } else
631 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
632 {
633 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
634 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
635 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
636 } else
637 if (m_brush.GetStyle() == wxSTIPPLE)
638 {
639 gdk_gc_set_ts_origin( m_brushGC,
640 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
641 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
642 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
643 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
644 }
645 else
646 {
647 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
648 }
649 }
650
651 if (m_pen.GetStyle() != wxTRANSPARENT)
652 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
653 }
654
655 CalcBoundingBox (x, y);
656 CalcBoundingBox (x + width, y + height);
657 }
658
659 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
660 {
661 wxCHECK_RET( Ok(), wxT("invalid window dc") );
662
663 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
664 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
665
666 CalcBoundingBox (x, y);
667 }
668
669 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
670 {
671 wxCHECK_RET( Ok(), wxT("invalid window dc") );
672
673 if (m_pen.GetStyle() == wxTRANSPARENT) return;
674 if (n <= 0) return;
675
676 //Check, if scaling is necessary
677 const bool doScale =
678 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
679
680 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
681 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
682
683 if (doScale)
684 gpts = new GdkPoint[n];
685
686 for (int i = 0; i < n; i++)
687 {
688 if (doScale)
689 {
690 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
691 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
692 }
693 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
694 }
695
696 if (m_window)
697 gdk_draw_lines( m_window, m_penGC, gpts, n);
698
699 if (doScale)
700 delete[] gpts;
701 }
702
703 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
704 {
705 wxCHECK_RET( Ok(), wxT("invalid window dc") );
706
707 if (n <= 0) return;
708
709 //Check, if scaling is necessary
710 const bool doScale =
711 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
712
713 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
714 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
715
716 if (doScale)
717 gdkpoints = new GdkPoint[n];
718
719 int i;
720 for (i = 0 ; i < n ; i++)
721 {
722 if (doScale)
723 {
724 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
725 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
726 }
727 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
728 }
729
730 if (m_window)
731 {
732 if (m_brush.GetStyle() != wxTRANSPARENT)
733 {
734 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
735 {
736 gdk_gc_set_ts_origin( m_textGC,
737 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
738 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
739 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
740 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
741 } else
742 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
743 {
744 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
745 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
746 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
747 } else
748 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
749 {
750 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
751 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
752 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
753 } else
754 if (m_brush.GetStyle() == wxSTIPPLE)
755 {
756 gdk_gc_set_ts_origin( m_brushGC,
757 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
758 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
759 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
760 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
761 }
762 else
763 {
764 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
765 }
766 }
767
768 if (m_pen.GetStyle() != wxTRANSPARENT)
769 {
770 /*
771 for (i = 0 ; i < n ; i++)
772 {
773 gdk_draw_line( m_window, m_penGC,
774 gdkpoints[i%n].x,
775 gdkpoints[i%n].y,
776 gdkpoints[(i+1)%n].x,
777 gdkpoints[(i+1)%n].y);
778 }
779 */
780 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
781
782 }
783 }
784
785 if (doScale)
786 delete[] gdkpoints;
787 }
788
789 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
790 {
791 wxCHECK_RET( Ok(), wxT("invalid window dc") );
792
793 wxCoord xx = XLOG2DEV(x);
794 wxCoord yy = YLOG2DEV(y);
795 wxCoord ww = m_signX * XLOG2DEVREL(width);
796 wxCoord hh = m_signY * YLOG2DEVREL(height);
797
798 // CMB: draw nothing if transformed w or h is 0
799 if (ww == 0 || hh == 0) return;
800
801 // CMB: handle -ve width and/or height
802 if (ww < 0) { ww = -ww; xx = xx - ww; }
803 if (hh < 0) { hh = -hh; yy = yy - hh; }
804
805 if (m_window)
806 {
807 if (m_brush.GetStyle() != wxTRANSPARENT)
808 {
809 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
810 {
811 gdk_gc_set_ts_origin( m_textGC,
812 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
813 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
814 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
815 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
816 } else
817 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
818 {
819 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
820 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
821 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
822 } else
823 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
824 {
825 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
826 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
827 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
828 } else
829 if (m_brush.GetStyle() == wxSTIPPLE)
830 {
831 gdk_gc_set_ts_origin( m_brushGC,
832 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
833 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
834 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
835 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
836 }
837 else
838 {
839 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
840 }
841 }
842
843 if (m_pen.GetStyle() != wxTRANSPARENT)
844 {
845 #if 1
846 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
847 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
848 {
849 // Use 2 1-line rects instead
850 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
851
852 if (m_signX == -1)
853 {
854 // Different for RTL
855 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
856 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
857 }
858 else
859 {
860 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
861 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
862 }
863
864 // reset
865 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
866 }
867 else
868 #endif
869 {
870 // Just use X11 for other cases
871 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
872 }
873 }
874 }
875
876 CalcBoundingBox( x, y );
877 CalcBoundingBox( x + width, y + height );
878 }
879
880 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
881 {
882 wxCHECK_RET( Ok(), wxT("invalid window dc") );
883
884 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
885
886 wxCoord xx = XLOG2DEV(x);
887 wxCoord yy = YLOG2DEV(y);
888 wxCoord ww = m_signX * XLOG2DEVREL(width);
889 wxCoord hh = m_signY * YLOG2DEVREL(height);
890 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
891
892 // CMB: handle -ve width and/or height
893 if (ww < 0) { ww = -ww; xx = xx - ww; }
894 if (hh < 0) { hh = -hh; yy = yy - hh; }
895
896 // CMB: if radius is zero use DrawRectangle() instead to avoid
897 // X drawing errors with small radii
898 if (rr == 0)
899 {
900 DrawRectangle( x, y, width, height );
901 return;
902 }
903
904 // CMB: draw nothing if transformed w or h is 0
905 if (ww == 0 || hh == 0) return;
906
907 // CMB: adjust size if outline is drawn otherwise the result is
908 // 1 pixel too wide and high
909 if (m_pen.GetStyle() != wxTRANSPARENT)
910 {
911 ww--;
912 hh--;
913 }
914
915 if (m_window)
916 {
917 // CMB: ensure dd is not larger than rectangle otherwise we
918 // get an hour glass shape
919 wxCoord dd = 2 * rr;
920 if (dd > ww) dd = ww;
921 if (dd > hh) dd = hh;
922 rr = dd / 2;
923
924 if (m_brush.GetStyle() != wxTRANSPARENT)
925 {
926 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
927 {
928 gdk_gc_set_ts_origin( m_textGC,
929 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
930 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
931 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
932 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
934 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
935 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
936 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
937 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
938 } else
939 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
940 {
941 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
943 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
948 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
949 } else
950 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
951 {
952 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
953 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
954 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
959 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
960 } else
961 if (m_brush.GetStyle() == wxSTIPPLE)
962 {
963 gdk_gc_set_ts_origin( m_brushGC,
964 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
965 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
966 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
967 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
970 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
972 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
973 }
974 else
975 {
976 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
977 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
979 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
980 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
981 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
982 }
983 }
984
985 if (m_pen.GetStyle() != wxTRANSPARENT)
986 {
987 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
988 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
989 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
990 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
992 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
993 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
994 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
995 }
996 }
997
998 // this ignores the radius
999 CalcBoundingBox( x, y );
1000 CalcBoundingBox( x + width, y + height );
1001 }
1002
1003 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1004 {
1005 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1006
1007 wxCoord xx = XLOG2DEV(x);
1008 wxCoord yy = YLOG2DEV(y);
1009 wxCoord ww = m_signX * XLOG2DEVREL(width);
1010 wxCoord hh = m_signY * YLOG2DEVREL(height);
1011
1012 // CMB: handle -ve width and/or height
1013 if (ww < 0) { ww = -ww; xx = xx - ww; }
1014 if (hh < 0) { hh = -hh; yy = yy - hh; }
1015
1016 if (m_window)
1017 {
1018 if (m_brush.GetStyle() != wxTRANSPARENT)
1019 {
1020 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1021 {
1022 gdk_gc_set_ts_origin( m_textGC,
1023 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1024 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1025 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1026 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1027 } else
1028 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1029 {
1030 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1031 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1032 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1033 } else
1034 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1035 {
1036 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1037 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1038 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1039 } else
1040 if (m_brush.GetStyle() == wxSTIPPLE)
1041 {
1042 gdk_gc_set_ts_origin( m_brushGC,
1043 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1044 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1045 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1046 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1047 }
1048 else
1049 {
1050 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1051 }
1052 }
1053
1054 if (m_pen.GetStyle() != wxTRANSPARENT)
1055 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1056 }
1057
1058 CalcBoundingBox( x, y );
1059 CalcBoundingBox( x + width, y + height );
1060 }
1061
1062 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1063 {
1064 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1065 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1066 }
1067
1068 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1069 wxCoord x, wxCoord y,
1070 bool useMask )
1071 {
1072 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1073
1074 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1075
1076 bool is_mono = bitmap.GetDepth() == 1;
1077
1078 // scale/translate size and position
1079 int xx = XLOG2DEV(x);
1080 int yy = YLOG2DEV(y);
1081
1082 int w = bitmap.GetWidth();
1083 int h = bitmap.GetHeight();
1084
1085 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1086 xx -= w;
1087
1088 CalcBoundingBox( x, y );
1089 CalcBoundingBox( x + w, y + h );
1090
1091 if (!m_window) return;
1092
1093 int ww = XLOG2DEVREL(w);
1094 int hh = YLOG2DEVREL(h);
1095
1096 // compare to current clipping region
1097 if (!m_currentClippingRegion.IsNull())
1098 {
1099 wxRegion tmp( xx,yy,ww,hh );
1100 tmp.Intersect( m_currentClippingRegion );
1101 if (tmp.IsEmpty())
1102 return;
1103 }
1104
1105 // scale bitmap if required
1106 wxBitmap use_bitmap = bitmap;
1107 if ((w != ww) || (h != hh))
1108 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1109
1110 #if !GTK_CHECK_VERSION(2,2,0)
1111 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1112 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1113 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1114 // and also creates the mask as a side-effect:
1115 use_bitmap.GetPixmap();
1116 #endif
1117
1118 // apply mask if any
1119 GdkBitmap *mask = (GdkBitmap *) NULL;
1120 if (useMask && use_bitmap.GetMask())
1121 mask = use_bitmap.GetMask()->GetBitmap();
1122
1123 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1124
1125 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1126
1127 if (mask != NULL)
1128 {
1129 if (!m_currentClippingRegion.IsNull())
1130 {
1131 GdkColor col;
1132 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1133 GdkGC *gc = gdk_gc_new( new_mask );
1134 col.pixel = 0;
1135 gdk_gc_set_foreground( gc, &col );
1136 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1137 col.pixel = 0;
1138 gdk_gc_set_background( gc, &col );
1139 col.pixel = 1;
1140 gdk_gc_set_foreground( gc, &col );
1141 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1142 gdk_gc_set_clip_origin( gc, -xx, -yy );
1143 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1144 gdk_gc_set_stipple( gc, mask );
1145 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1146 mask = new_mask;
1147 g_object_unref (gc);
1148 }
1149
1150 gdk_gc_set_clip_mask(use_gc, mask);
1151 gdk_gc_set_clip_origin(use_gc, xx, yy);
1152 }
1153
1154 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1155 // drawing a mono-bitmap (XBitmap) we use the current text GC
1156 if (is_mono)
1157 {
1158 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1159 GdkGC *gc = gdk_gc_new( bitmap2 );
1160 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1161 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1162 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1163
1164 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1165
1166 g_object_unref (bitmap2);
1167 g_object_unref (gc);
1168 }
1169 else
1170 {
1171 #if GTK_CHECK_VERSION(2,2,0)
1172 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1173 {
1174 gdk_draw_pixbuf(m_window, use_gc,
1175 use_bitmap.GetPixbuf(),
1176 0, 0, xx, yy, -1, -1,
1177 GDK_RGB_DITHER_NORMAL, xx, yy);
1178 }
1179 else
1180 #endif
1181 {
1182 gdk_draw_drawable(m_window, use_gc,
1183 use_bitmap.GetPixmap(),
1184 0, 0, xx, yy, -1, -1);
1185 }
1186 }
1187
1188 // remove mask again if any
1189 if (mask != NULL)
1190 {
1191 gdk_gc_set_clip_mask(use_gc, NULL);
1192 gdk_gc_set_clip_origin(use_gc, 0, 0);
1193 if (!m_currentClippingRegion.IsNull())
1194 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1195 if (new_mask != NULL)
1196 g_object_unref(new_mask);
1197 }
1198 }
1199
1200 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1201 wxCoord width, wxCoord height,
1202 wxDC *source,
1203 wxCoord xsrc, wxCoord ysrc,
1204 int logical_func,
1205 bool useMask,
1206 wxCoord xsrcMask, wxCoord ysrcMask )
1207 {
1208 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1209
1210 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1211
1212 if (!m_window) return false;
1213
1214 // transform the source DC coords to the device ones
1215 xsrc = source->LogicalToDeviceX(xsrc);
1216 ysrc = source->LogicalToDeviceY(ysrc);
1217
1218 wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
1219 wxBitmap selected = source->GetSelectedBitmap();
1220
1221 bool use_bitmap_method = false;
1222 bool is_mono = false;
1223
1224 if (xsrcMask == -1 && ysrcMask == -1)
1225 {
1226 xsrcMask = xsrc;
1227 ysrcMask = ysrc;
1228 }
1229
1230 if (memDC && !selected.Ok()) return false;
1231
1232 if (selected.Ok())
1233 {
1234 is_mono = (selected.GetDepth() == 1);
1235
1236 // we use the "XCopyArea" way to copy a memory dc into
1237 // a different window if the memory dc BOTH
1238 // a) doesn't have any mask or its mask isn't used
1239 // b) it is clipped
1240 // c) is not 1-bit
1241
1242 if (useMask && (selected.GetMask()))
1243 {
1244 // we HAVE TO use the direct way for memory dcs
1245 // that have mask since the XCopyArea doesn't know
1246 // about masks
1247 use_bitmap_method = true;
1248 }
1249 else if (is_mono)
1250 {
1251 // we HAVE TO use the direct way for memory dcs
1252 // that are bitmaps because XCopyArea doesn't cope
1253 // with different bit depths
1254 use_bitmap_method = true;
1255 }
1256 else if ((xsrc == 0) && (ysrc == 0) &&
1257 (width == selected.GetWidth()) &&
1258 (height == selected.GetHeight()))
1259 {
1260 // we SHOULD use the direct way if all of the bitmap
1261 // in the memory dc is copied in which case XCopyArea
1262 // wouldn't be able able to boost performace by reducing
1263 // the area to be scaled
1264 use_bitmap_method = true;
1265 }
1266 }
1267
1268 CalcBoundingBox( xdest, ydest );
1269 CalcBoundingBox( xdest + width, ydest + height );
1270
1271 // scale/translate size and position
1272 wxCoord xx = XLOG2DEV(xdest);
1273 wxCoord yy = YLOG2DEV(ydest);
1274
1275 wxCoord ww = XLOG2DEVREL(width);
1276 wxCoord hh = YLOG2DEVREL(height);
1277
1278 // compare to current clipping region
1279 if (!m_currentClippingRegion.IsNull())
1280 {
1281 wxRegion tmp( xx,yy,ww,hh );
1282 tmp.Intersect( m_currentClippingRegion );
1283 if (tmp.IsEmpty())
1284 return true;
1285 }
1286
1287 int old_logical_func = m_logicalFunction;
1288 SetLogicalFunction( logical_func );
1289
1290 if (use_bitmap_method)
1291 {
1292 // scale/translate bitmap size
1293 wxCoord bm_width = selected.GetWidth();
1294 wxCoord bm_height = selected.GetHeight();
1295
1296 // Get clip coords for the bitmap. If we don't
1297 // use wxBitmap::Rescale(), which can clip the
1298 // bitmap, these are the same as the original
1299 // coordinates
1300 wxCoord cx = xx;
1301 wxCoord cy = yy;
1302 wxCoord cw = ww;
1303 wxCoord ch = hh;
1304
1305 // interpret userscale of src too
1306 double xsc,ysc;
1307 memDC->GetUserScale(&xsc,&ysc);
1308 bm_width = (int) (bm_width / xsc);
1309 bm_height = (int) (bm_height / ysc);
1310
1311 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1312 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1313
1314 // Scale bitmap if required
1315 wxBitmap use_bitmap = selected;
1316 if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
1317 {
1318 // This indicates that the blitting code below will get
1319 // a clipped bitmap and therefore needs to move the origin
1320 // accordingly
1321 wxRegion tmp( xx,yy,ww,hh );
1322 if (!m_currentClippingRegion.IsNull())
1323 tmp.Intersect( m_currentClippingRegion );
1324 tmp.GetBox(cx,cy,cw,ch);
1325
1326 // Scale and clipped bitmap
1327 use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1328 }
1329
1330 // apply mask if any
1331 GdkBitmap *mask = (GdkBitmap *) NULL;
1332 if (useMask && use_bitmap.GetMask())
1333 mask = use_bitmap.GetMask()->GetBitmap();
1334
1335 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1336
1337 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1338
1339 if (mask != NULL)
1340 {
1341 if (!m_currentClippingRegion.IsNull())
1342 {
1343 GdkColor col;
1344 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1345 GdkGC *gc = gdk_gc_new( new_mask );
1346 col.pixel = 0;
1347 gdk_gc_set_foreground( gc, &col );
1348 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1349 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1350 col.pixel = 0;
1351 gdk_gc_set_background( gc, &col );
1352 col.pixel = 1;
1353 gdk_gc_set_foreground( gc, &col );
1354 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1355 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1356 gdk_gc_set_clip_origin( gc, -cx, -cy );
1357 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1358 gdk_gc_set_stipple( gc, mask );
1359 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1360 mask = new_mask;
1361 g_object_unref (gc);
1362 }
1363
1364 gdk_gc_set_clip_mask(use_gc, mask);
1365 if (new_mask != NULL)
1366 gdk_gc_set_clip_origin(use_gc, cx, cy);
1367 else
1368 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1369 }
1370
1371 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1372 // drawing a mono-bitmap (XBitmap) we use the current text GC
1373
1374 if (is_mono)
1375 {
1376 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1377 GdkGC *gc = gdk_gc_new( bitmap );
1378 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1379 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1380 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1381
1382 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1383
1384 g_object_unref (bitmap);
1385 g_object_unref (gc);
1386 }
1387 else
1388 {
1389 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1390 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1391 }
1392
1393 // remove mask again if any
1394 if (mask != NULL)
1395 {
1396 gdk_gc_set_clip_mask(use_gc, NULL);
1397 gdk_gc_set_clip_origin(use_gc, 0, 0);
1398 if (!m_currentClippingRegion.IsNull())
1399 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1400 }
1401
1402 if (new_mask)
1403 g_object_unref (new_mask);
1404 }
1405 else // use_bitmap_method
1406 {
1407 if (selected.Ok() && ((width != ww) || (height != hh)))
1408 {
1409 // get clip coords
1410 wxRegion tmp( xx,yy,ww,hh );
1411 tmp.Intersect( m_currentClippingRegion );
1412 wxCoord cx,cy,cw,ch;
1413 tmp.GetBox(cx,cy,cw,ch);
1414
1415 // rescale bitmap
1416 wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1417
1418 // draw scaled bitmap
1419 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1420 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1421 }
1422 else
1423 {
1424 // No scaling and not a memory dc with a mask either
1425
1426 GdkWindow* window = source->GetGDKWindow();
1427 if ( !window )
1428 return false;
1429
1430 // copy including child window contents
1431 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1432 gdk_draw_drawable( m_window, m_penGC,
1433 window,
1434 xsrc, ysrc, xx, yy,
1435 width, height );
1436 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1437 }
1438 }
1439
1440 SetLogicalFunction( old_logical_func );
1441
1442 return true;
1443 }
1444
1445 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1446 {
1447 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1448
1449 if (!m_window) return;
1450
1451 if (text.empty()) return;
1452
1453 x = XLOG2DEV(x);
1454 y = YLOG2DEV(y);
1455
1456 wxCHECK_RET( m_context, wxT("no Pango context") );
1457 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1458 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1459
1460 gdk_pango_context_set_colormap( m_context, m_cmap );
1461
1462 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1463
1464 const wxCharBuffer data = wxGTK_CONV( text );
1465 if ( !data )
1466 return;
1467 size_t datalen = strlen(data);
1468
1469 // TODO: as soon as Pango provides a function to check at runtime its
1470 // version, we can use it to disable the underline hack for
1471 // Pango >= 1.16 as the "underline of leading/trailing spaces"
1472 // has been fixed there
1473 bool needshack = underlined;
1474 char *hackstring = NULL;
1475
1476 if (needshack)
1477 {
1478 // a PangoLayout which has leading/trailing spaces with underlined font
1479 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1480 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1481 // this behaviour. To workaround this problem, we use a special hack here
1482 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1483 // empty space characters and give them a dummy colour attribute.
1484 // This will force Pango to underline the leading/trailing spaces, too.
1485
1486 // need to realloc the string to prepend & append our special characters
1487 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1488
1489 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1490 strcpy(hackstring, "\342\200\214");
1491
1492 // copy the user string
1493 memcpy(&hackstring[3], data, datalen);
1494
1495 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1496 strcpy(&hackstring[datalen+3], "\342\200\214");
1497
1498 // the special characters that we added require 6 additional bytes:
1499 datalen += 6;
1500
1501 pango_layout_set_text(m_layout, hackstring, datalen);
1502 }
1503 else
1504 {
1505 pango_layout_set_text(m_layout, data, datalen);
1506 }
1507
1508 if (underlined)
1509 {
1510 PangoAttrList *attrs = pango_attr_list_new();
1511 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1512 a->start_index = 0;
1513 a->end_index = datalen;
1514 pango_attr_list_insert(attrs, a);
1515
1516 if (needshack)
1517 {
1518 // dummy colour for the leading space
1519 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1520 a->start_index = 0;
1521 a->end_index = 1;
1522 pango_attr_list_insert(attrs, a);
1523
1524 // dummy colour for the trailing space
1525 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1526 a->start_index = datalen - 1;
1527 a->end_index = datalen;
1528 pango_attr_list_insert(attrs, a);
1529 }
1530
1531 pango_layout_set_attributes(m_layout, attrs);
1532 pango_attr_list_unref(attrs);
1533 }
1534
1535 int w,h;
1536
1537 if (fabs(m_scaleY - 1.0) > 0.00001)
1538 {
1539 // If there is a user or actually any scale applied to
1540 // the device context, scale the font.
1541
1542 // scale font description
1543 gint oldSize = pango_font_description_get_size( m_fontdesc );
1544 double size = oldSize;
1545 size = size * m_scaleY;
1546 pango_font_description_set_size( m_fontdesc, (gint)size );
1547
1548 // actually apply scaled font
1549 pango_layout_set_font_description( m_layout, m_fontdesc );
1550
1551 pango_layout_get_pixel_size( m_layout, &w, &h );
1552 if ( m_backgroundMode == wxSOLID )
1553 {
1554 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1555 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1556 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1557 }
1558
1559 // Draw layout.
1560 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1561 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1562 else
1563 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1564
1565 // reset unscaled size
1566 pango_font_description_set_size( m_fontdesc, oldSize );
1567
1568 // actually apply unscaled font
1569 pango_layout_set_font_description( m_layout, m_fontdesc );
1570 }
1571 else
1572 {
1573 pango_layout_get_pixel_size( m_layout, &w, &h );
1574 if ( m_backgroundMode == wxSOLID )
1575 {
1576 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1577 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1578 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1579 }
1580
1581 // Draw layout.
1582 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1583 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1584 else
1585 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1586 }
1587
1588 if (underlined)
1589 {
1590 // undo underline attributes setting:
1591 pango_layout_set_attributes(m_layout, NULL);
1592 }
1593
1594 wxCoord width = w;
1595 wxCoord height = h;
1596
1597 width = wxCoord(width / m_scaleX);
1598 height = wxCoord(height / m_scaleY);
1599 CalcBoundingBox (x + width, y + height);
1600 CalcBoundingBox (x, y);
1601
1602 if (hackstring)
1603 free(hackstring);
1604 }
1605
1606
1607 // TODO: There is an example of rotating text with GTK2 that would probably be
1608 // a better approach here:
1609 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1610
1611 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1612 {
1613 if (!m_window || text.empty())
1614 return;
1615
1616 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1617
1618 if ( wxIsNullDouble(angle) )
1619 {
1620 DrawText(text, x, y);
1621 return;
1622 }
1623
1624 wxCoord w;
1625 wxCoord h;
1626
1627 // TODO: implement later without GdkFont for GTK 2.0
1628 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1629
1630 // draw the string normally
1631 wxBitmap src(w, h);
1632 wxMemoryDC dc;
1633 dc.SelectObject(src);
1634 dc.SetFont(GetFont());
1635 dc.SetBackground(*wxBLACK_BRUSH);
1636 dc.SetBrush(*wxBLACK_BRUSH);
1637 dc.Clear();
1638 dc.SetTextForeground( *wxWHITE );
1639 dc.DrawText(text, 0, 0);
1640 dc.SelectObject(wxNullBitmap);
1641
1642 // Calculate the size of the rotated bounding box.
1643 double rad = DegToRad(angle);
1644 double dx = cos(rad),
1645 dy = sin(rad);
1646
1647 // the rectngle vertices are counted clockwise with the first one being at
1648 // (0, 0) (or, rather, at (x, y))
1649 double x2 = w*dx,
1650 y2 = -w*dy; // y axis points to the bottom, hence minus
1651 double x4 = h*dy,
1652 y4 = h*dx;
1653 double x3 = x4 + x2,
1654 y3 = y4 + y2;
1655
1656 // calc max and min
1657 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1658 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1659 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1660 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1661
1662
1663 wxImage image = src.ConvertToImage();
1664
1665 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1666 m_textForegroundColour.Green(),
1667 m_textForegroundColour.Blue() );
1668 image = image.Rotate( rad, wxPoint(0,0) );
1669
1670 int i_angle = (int) angle;
1671 i_angle = i_angle % 360;
1672 if (i_angle < 0)
1673 i_angle += 360;
1674 int xoffset = 0;
1675 if ((i_angle >= 90.0) && (i_angle < 270.0))
1676 xoffset = image.GetWidth();
1677 int yoffset = 0;
1678 if ((i_angle >= 0.0) && (i_angle < 180.0))
1679 yoffset = image.GetHeight();
1680
1681 if ((i_angle >= 0) && (i_angle < 90))
1682 yoffset -= (int)( cos(rad)*h );
1683 if ((i_angle >= 90) && (i_angle < 180))
1684 xoffset -= (int)( sin(rad)*h );
1685 if ((i_angle >= 180) && (i_angle < 270))
1686 yoffset -= (int)( cos(rad)*h );
1687 if ((i_angle >= 270) && (i_angle < 360))
1688 xoffset -= (int)( sin(rad)*h );
1689
1690 int i_x = x - xoffset;
1691 int i_y = y - yoffset;
1692
1693 src = image;
1694 DoDrawBitmap( src, i_x, i_y, true );
1695
1696
1697 // it would be better to draw with non underlined font and draw the line
1698 // manually here (it would be more straight...)
1699 #if 0
1700 if ( m_font.GetUnderlined() )
1701 {
1702 gdk_draw_line( m_window, m_textGC,
1703 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1704 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1705 }
1706 #endif // 0
1707
1708 // update the bounding box
1709 CalcBoundingBox(x + minX, y + minY);
1710 CalcBoundingBox(x + maxX, y + maxY);
1711 }
1712
1713 void wxWindowDC::DoGetTextExtent(const wxString &string,
1714 wxCoord *width, wxCoord *height,
1715 wxCoord *descent, wxCoord *externalLeading,
1716 wxFont *theFont) const
1717 {
1718 if ( width )
1719 *width = 0;
1720 if ( height )
1721 *height = 0;
1722 if ( descent )
1723 *descent = 0;
1724 if ( externalLeading )
1725 *externalLeading = 0;
1726
1727 if (string.empty())
1728 return;
1729
1730 // ensure that theFont is always non-NULL
1731 if ( !theFont || !theFont->Ok() )
1732 theFont = wx_const_cast(wxFont *, &m_font);
1733
1734 // and use it if it's valid
1735 if ( theFont->Ok() )
1736 {
1737 pango_layout_set_font_description
1738 (
1739 m_layout,
1740 theFont->GetNativeFontInfo()->description
1741 );
1742 }
1743
1744 // Set layout's text
1745 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1746 if ( !dataUTF8 )
1747 {
1748 // hardly ideal, but what else can we do if conversion failed?
1749 return;
1750 }
1751
1752 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1753
1754 if (descent)
1755 {
1756 int h;
1757 pango_layout_get_pixel_size( m_layout, width, &h );
1758 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1759 int baseline = pango_layout_iter_get_baseline(iter);
1760 pango_layout_iter_free(iter);
1761 *descent = h - PANGO_PIXELS(baseline);
1762
1763 if (height)
1764 *height = (wxCoord) h;
1765 }
1766 else
1767 {
1768 pango_layout_get_pixel_size( m_layout, width, height );
1769 }
1770
1771 // Reset old font description
1772 if (theFont)
1773 pango_layout_set_font_description( m_layout, m_fontdesc );
1774 }
1775
1776 wxCoord wxWindowDC::GetCharWidth() const
1777 {
1778 pango_layout_set_text( m_layout, "H", 1 );
1779 int w;
1780 pango_layout_get_pixel_size( m_layout, &w, NULL );
1781 return w;
1782 }
1783
1784 wxCoord wxWindowDC::GetCharHeight() const
1785 {
1786 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1787 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1788 }
1789
1790 void wxWindowDC::Clear()
1791 {
1792 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1793
1794 if (!m_window) return;
1795
1796 // VZ: the code below results in infinite recursion and crashes when
1797 // dc.Clear() is done from OnPaint() so I disable it for now.
1798 // I don't know what the correct fix is but Clear() surely should not
1799 // reenter OnPaint()!
1800 #if 0
1801 /* - we either are a memory dc or have a window as the
1802 owner. anything else shouldn't happen.
1803 - we don't use gdk_window_clear() as we don't set
1804 the window's background colour anymore. it is too
1805 much pain to keep the DC's and the window's back-
1806 ground colour in synch. */
1807
1808 if (m_owner)
1809 {
1810 m_owner->Clear();
1811 return;
1812 }
1813
1814 if (m_isMemDC)
1815 {
1816 int width,height;
1817 GetSize( &width, &height );
1818 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1819 return;
1820 }
1821 #else // 1
1822 int width,height;
1823 GetSize( &width, &height );
1824 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1825 #endif // 0/1
1826 }
1827
1828 void wxWindowDC::SetFont( const wxFont &font )
1829 {
1830 m_font = font;
1831
1832 if (m_font.Ok())
1833 {
1834 if (m_fontdesc)
1835 pango_font_description_free( m_fontdesc );
1836
1837 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1838
1839
1840 if (m_owner)
1841 {
1842 PangoContext *oldContext = m_context;
1843
1844 m_context = m_owner->GtkGetPangoDefaultContext();
1845
1846 // If we switch back/forth between different contexts
1847 // we also have to create a new layout. I think so,
1848 // at least, and it doesn't hurt to do it.
1849 if (oldContext != m_context)
1850 {
1851 if (m_layout)
1852 g_object_unref (m_layout);
1853
1854 m_layout = pango_layout_new( m_context );
1855 }
1856 }
1857
1858 pango_layout_set_font_description( m_layout, m_fontdesc );
1859 }
1860 }
1861
1862 void wxWindowDC::SetPen( const wxPen &pen )
1863 {
1864 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1865
1866 if (m_pen == pen) return;
1867
1868 m_pen = pen;
1869
1870 if (!m_pen.Ok()) return;
1871
1872 if (!m_window) return;
1873
1874 gint width = m_pen.GetWidth();
1875 if (width <= 0)
1876 {
1877 // CMB: if width is non-zero scale it with the dc
1878 width = 1;
1879 }
1880 else
1881 {
1882 // X doesn't allow different width in x and y and so we take
1883 // the average
1884 double w = 0.5 +
1885 ( fabs((double) XLOG2DEVREL(width)) +
1886 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1887 width = (int)w;
1888 if ( !width )
1889 {
1890 // width can't be 0 or an internal GTK error occurs inside
1891 // gdk_gc_set_dashes() below
1892 width = 1;
1893 }
1894 }
1895
1896 static const wxGTKDash dotted[] = {1, 1};
1897 static const wxGTKDash short_dashed[] = {2, 2};
1898 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1899 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1900
1901 // We express dash pattern in pen width unit, so we are
1902 // independent of zoom factor and so on...
1903 int req_nb_dash;
1904 const wxGTKDash *req_dash;
1905
1906 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1907 switch (m_pen.GetStyle())
1908 {
1909 case wxUSER_DASH:
1910 {
1911 lineStyle = GDK_LINE_ON_OFF_DASH;
1912 req_nb_dash = m_pen.GetDashCount();
1913 req_dash = (wxGTKDash*)m_pen.GetDash();
1914 break;
1915 }
1916 case wxDOT:
1917 {
1918 lineStyle = GDK_LINE_ON_OFF_DASH;
1919 req_nb_dash = 2;
1920 req_dash = dotted;
1921 break;
1922 }
1923 case wxLONG_DASH:
1924 {
1925 lineStyle = GDK_LINE_ON_OFF_DASH;
1926 req_nb_dash = 2;
1927 req_dash = wxCoord_dashed;
1928 break;
1929 }
1930 case wxSHORT_DASH:
1931 {
1932 lineStyle = GDK_LINE_ON_OFF_DASH;
1933 req_nb_dash = 2;
1934 req_dash = short_dashed;
1935 break;
1936 }
1937 case wxDOT_DASH:
1938 {
1939 // lineStyle = GDK_LINE_DOUBLE_DASH;
1940 lineStyle = GDK_LINE_ON_OFF_DASH;
1941 req_nb_dash = 4;
1942 req_dash = dotted_dashed;
1943 break;
1944 }
1945
1946 case wxTRANSPARENT:
1947 case wxSTIPPLE_MASK_OPAQUE:
1948 case wxSTIPPLE:
1949 case wxSOLID:
1950 default:
1951 {
1952 lineStyle = GDK_LINE_SOLID;
1953 req_dash = (wxGTKDash*)NULL;
1954 req_nb_dash = 0;
1955 break;
1956 }
1957 }
1958
1959 if (req_dash && req_nb_dash)
1960 {
1961 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1962 if (real_req_dash)
1963 {
1964 for (int i = 0; i < req_nb_dash; i++)
1965 real_req_dash[i] = req_dash[i] * width;
1966 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1967 delete[] real_req_dash;
1968 }
1969 else
1970 {
1971 // No Memory. We use non-scaled dash pattern...
1972 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1973 }
1974 }
1975
1976 GdkCapStyle capStyle = GDK_CAP_ROUND;
1977 switch (m_pen.GetCap())
1978 {
1979 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1980 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1981 case wxCAP_ROUND:
1982 default:
1983 {
1984 if (width <= 1)
1985 {
1986 width = 0;
1987 capStyle = GDK_CAP_NOT_LAST;
1988 }
1989 else
1990 {
1991 capStyle = GDK_CAP_ROUND;
1992 }
1993 break;
1994 }
1995 }
1996
1997 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1998 switch (m_pen.GetJoin())
1999 {
2000 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2001 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2002 case wxJOIN_ROUND:
2003 default: { joinStyle = GDK_JOIN_ROUND; break; }
2004 }
2005
2006 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2007
2008 m_pen.GetColour().CalcPixel( m_cmap );
2009 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2010 }
2011
2012 void wxWindowDC::SetBrush( const wxBrush &brush )
2013 {
2014 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2015
2016 if (m_brush == brush) return;
2017
2018 m_brush = brush;
2019
2020 if (!m_brush.Ok()) return;
2021
2022 if (!m_window) return;
2023
2024 m_brush.GetColour().CalcPixel( m_cmap );
2025 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2026
2027 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2028
2029 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2030 {
2031 if (m_brush.GetStipple()->GetDepth() != 1)
2032 {
2033 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2034 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2035 }
2036 else
2037 {
2038 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2039 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2040 }
2041 }
2042
2043 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2044 {
2045 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2046 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2047 }
2048
2049 if (m_brush.IsHatch())
2050 {
2051 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2052 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2053 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2054 }
2055 }
2056
2057 void wxWindowDC::SetBackground( const wxBrush &brush )
2058 {
2059 /* CMB 21/7/98: Added SetBackground. Sets background brush
2060 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2061
2062 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2063
2064 if (m_backgroundBrush == brush) return;
2065
2066 m_backgroundBrush = brush;
2067
2068 if (!m_backgroundBrush.Ok()) return;
2069
2070 if (!m_window) return;
2071
2072 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2073 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2074 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2075 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2076 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2077
2078 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2079
2080 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2081 {
2082 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2083 {
2084 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2085 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2086 }
2087 else
2088 {
2089 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2090 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2091 }
2092 }
2093
2094 if (m_backgroundBrush.IsHatch())
2095 {
2096 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2097 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2098 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2099 }
2100 }
2101
2102 void wxWindowDC::SetLogicalFunction( int function )
2103 {
2104 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2105
2106 if (m_logicalFunction == function)
2107 return;
2108
2109 // VZ: shouldn't this be a CHECK?
2110 if (!m_window)
2111 return;
2112
2113 GdkFunction mode;
2114 switch (function)
2115 {
2116 case wxXOR: mode = GDK_XOR; break;
2117 case wxINVERT: mode = GDK_INVERT; break;
2118 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2119 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2120 case wxCLEAR: mode = GDK_CLEAR; break;
2121 case wxSET: mode = GDK_SET; break;
2122 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2123 case wxAND: mode = GDK_AND; break;
2124 case wxOR: mode = GDK_OR; break;
2125 case wxEQUIV: mode = GDK_EQUIV; break;
2126 case wxNAND: mode = GDK_NAND; break;
2127 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2128 case wxCOPY: mode = GDK_COPY; break;
2129 case wxNO_OP: mode = GDK_NOOP; break;
2130 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2131
2132 // unsupported by GTK
2133 case wxNOR: mode = GDK_COPY; break;
2134 default:
2135 wxFAIL_MSG( wxT("unsupported logical function") );
2136 mode = GDK_COPY;
2137 }
2138
2139 m_logicalFunction = function;
2140
2141 gdk_gc_set_function( m_penGC, mode );
2142 gdk_gc_set_function( m_brushGC, mode );
2143
2144 // to stay compatible with wxMSW, we don't apply ROPs to the text
2145 // operations (i.e. DrawText/DrawRotatedText).
2146 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2147 gdk_gc_set_function( m_textGC, mode );
2148 }
2149
2150 void wxWindowDC::SetTextForeground( const wxColour &col )
2151 {
2152 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2153
2154 // don't set m_textForegroundColour to an invalid colour as we'd crash
2155 // later then (we use m_textForegroundColour.GetColor() without checking
2156 // in a few places)
2157 if ( !col.Ok() || (m_textForegroundColour == col) )
2158 return;
2159
2160 m_textForegroundColour = col;
2161
2162 if ( m_window )
2163 {
2164 m_textForegroundColour.CalcPixel( m_cmap );
2165 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2166 }
2167 }
2168
2169 void wxWindowDC::SetTextBackground( const wxColour &col )
2170 {
2171 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2172
2173 // same as above
2174 if ( !col.Ok() || (m_textBackgroundColour == col) )
2175 return;
2176
2177 m_textBackgroundColour = col;
2178
2179 if ( m_window )
2180 {
2181 m_textBackgroundColour.CalcPixel( m_cmap );
2182 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2183 }
2184 }
2185
2186 void wxWindowDC::SetBackgroundMode( int mode )
2187 {
2188 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2189
2190 m_backgroundMode = mode;
2191
2192 if (!m_window) return;
2193
2194 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2195 // transparent/solid background mode
2196
2197 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2198 {
2199 gdk_gc_set_fill( m_brushGC,
2200 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2201 }
2202 }
2203
2204 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2205 {
2206 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2207 }
2208
2209 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2210 {
2211 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2212
2213 if (!m_window) return;
2214
2215 wxRect rect;
2216 rect.x = XLOG2DEV(x);
2217 rect.y = YLOG2DEV(y);
2218 rect.width = XLOG2DEVREL(width);
2219 rect.height = YLOG2DEVREL(height);
2220
2221 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2222 {
2223 rect.x -= rect.width;
2224 }
2225
2226 if (!m_currentClippingRegion.IsNull())
2227 m_currentClippingRegion.Intersect( rect );
2228 else
2229 m_currentClippingRegion.Union( rect );
2230
2231 #if USE_PAINT_REGION
2232 if (!m_paintClippingRegion.IsNull())
2233 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2234 #endif
2235
2236 wxCoord xx, yy, ww, hh;
2237 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2238 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2239
2240 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2241 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2242 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2243 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2244 }
2245
2246 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2247 {
2248 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2249
2250 if (region.Empty())
2251 {
2252 DestroyClippingRegion();
2253 return;
2254 }
2255
2256 if (!m_window) return;
2257
2258 if (!m_currentClippingRegion.IsNull())
2259 m_currentClippingRegion.Intersect( region );
2260 else
2261 m_currentClippingRegion.Union( region );
2262
2263 #if USE_PAINT_REGION
2264 if (!m_paintClippingRegion.IsNull())
2265 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2266 #endif
2267
2268 wxCoord xx, yy, ww, hh;
2269 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2270 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2271
2272 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2273 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2274 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2275 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2276 }
2277
2278 void wxWindowDC::DestroyClippingRegion()
2279 {
2280 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2281
2282 wxDC::DestroyClippingRegion();
2283
2284 m_currentClippingRegion.Clear();
2285
2286 #if USE_PAINT_REGION
2287 if (!m_paintClippingRegion.IsEmpty())
2288 m_currentClippingRegion.Union( m_paintClippingRegion );
2289 #endif
2290
2291 if (!m_window) return;
2292
2293 if (m_currentClippingRegion.IsEmpty())
2294 {
2295 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2296 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2297 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2298 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2299 }
2300 else
2301 {
2302 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2303 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2304 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2305 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2306 }
2307 }
2308
2309 void wxWindowDC::Destroy()
2310 {
2311 if (m_penGC) wxFreePoolGC( m_penGC );
2312 m_penGC = (GdkGC*) NULL;
2313 if (m_brushGC) wxFreePoolGC( m_brushGC );
2314 m_brushGC = (GdkGC*) NULL;
2315 if (m_textGC) wxFreePoolGC( m_textGC );
2316 m_textGC = (GdkGC*) NULL;
2317 if (m_bgGC) wxFreePoolGC( m_bgGC );
2318 m_bgGC = (GdkGC*) NULL;
2319 }
2320
2321 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2322 {
2323 m_deviceOriginX = x;
2324 m_deviceOriginY = y;
2325
2326 ComputeScaleAndOrigin();
2327 }
2328
2329 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2330 {
2331 m_signX = (xLeftRight ? 1 : -1);
2332 m_signY = (yBottomUp ? -1 : 1);
2333
2334 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2335 m_signX = -m_signX;
2336
2337 ComputeScaleAndOrigin();
2338 }
2339
2340 void wxWindowDC::ComputeScaleAndOrigin()
2341 {
2342 const wxRealPoint origScale(m_scaleX, m_scaleY);
2343
2344 wxDC::ComputeScaleAndOrigin();
2345
2346 // if scale has changed call SetPen to recalulate the line width
2347 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2348 {
2349 // this is a bit artificial, but we need to force wxDC to think the pen
2350 // has changed
2351 wxPen pen = m_pen;
2352 m_pen = wxNullPen;
2353 SetPen( pen );
2354 }
2355 }
2356
2357 // Resolution in pixels per logical inch
2358 wxSize wxWindowDC::GetPPI() const
2359 {
2360 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2361 }
2362
2363 int wxWindowDC::GetDepth() const
2364 {
2365 return gdk_drawable_get_depth(m_window);
2366 }
2367
2368
2369 //-----------------------------------------------------------------------------
2370 // wxPaintDC
2371 //-----------------------------------------------------------------------------
2372
2373 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2374
2375 // Limit the paint region to the window size. Sometimes
2376 // the paint region is too big, and this risks X11 errors
2377 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2378 {
2379 wxRect originalRect = region.GetBox();
2380 wxRect rect(originalRect);
2381 if (rect.width + rect.x > sz.x)
2382 rect.width = sz.x - rect.x;
2383 if (rect.height + rect.y > sz.y)
2384 rect.height = sz.y - rect.y;
2385 if (rect != originalRect)
2386 {
2387 region = wxRegion(rect);
2388 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2389 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2390 rect.x, rect.y, rect.width, rect.height);
2391 }
2392 }
2393
2394 wxPaintDC::wxPaintDC( wxWindow *win )
2395 : wxClientDC( win )
2396 {
2397 #if USE_PAINT_REGION
2398 if (!win->m_clipPaintRegion)
2399 return;
2400
2401 wxSize sz = win->GetSize();
2402 m_paintClippingRegion = win->m_nativeUpdateRegion;
2403 wxLimitRegionToSize(m_paintClippingRegion, sz);
2404
2405 GdkRegion *region = m_paintClippingRegion.GetRegion();
2406 if ( region )
2407 {
2408 m_currentClippingRegion.Union( m_paintClippingRegion );
2409 wxLimitRegionToSize(m_currentClippingRegion, sz);
2410
2411 if (sz.x <= 0 || sz.y <= 0)
2412 return ;
2413
2414 gdk_gc_set_clip_region( m_penGC, region );
2415 gdk_gc_set_clip_region( m_brushGC, region );
2416 gdk_gc_set_clip_region( m_textGC, region );
2417 gdk_gc_set_clip_region( m_bgGC, region );
2418 }
2419 #endif // USE_PAINT_REGION
2420 }
2421
2422 //-----------------------------------------------------------------------------
2423 // wxClientDC
2424 //-----------------------------------------------------------------------------
2425
2426 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2427
2428 wxClientDC::wxClientDC( wxWindow *win )
2429 : wxWindowDC( win )
2430 {
2431 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2432
2433 #ifdef __WXUNIVERSAL__
2434 wxPoint ptOrigin = win->GetClientAreaOrigin();
2435 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2436 wxSize size = win->GetClientSize();
2437 SetClippingRegion(wxPoint(0, 0), size);
2438 #endif // __WXUNIVERSAL__
2439 }
2440
2441 void wxClientDC::DoGetSize(int *width, int *height) const
2442 {
2443 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2444
2445 m_owner->GetClientSize( width, height );
2446 }
2447
2448 // ----------------------------------------------------------------------------
2449 // wxDCModule
2450 // ----------------------------------------------------------------------------
2451
2452 class wxDCModule : public wxModule
2453 {
2454 public:
2455 bool OnInit();
2456 void OnExit();
2457
2458 private:
2459 DECLARE_DYNAMIC_CLASS(wxDCModule)
2460 };
2461
2462 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2463
2464 bool wxDCModule::OnInit()
2465 {
2466 wxInitGCPool();
2467 return true;
2468 }
2469
2470 void wxDCModule::OnExit()
2471 {
2472 wxCleanUpGCPool();
2473 }
wxWidgets (Impactor)